| Value | Category |
|---|---|
| 1 | Pre-school |
| 2 | P1 |
| 3 | P2 |
| 4 | P3 |
| 5 | P4 |
| 6 | P5 |
| 7 | P6 |
| 8 | JSS1-JSS2 |
| 10 | JSS3 |
| 11 | M1-M3 |
| 14 | M4 |
| 15 | SSS1-SSS2 |
| 17 | SSS3-SSS4 |
| 18 | S1-S5,L6,U6 |
| 25 | Teacher Training, Nursing, Polytechnic, University, Other Tertiary |
| 31 | Other |
| 88 | Don't Know |
| 99 | Refused |
| 999 | None |
| Sysmiss |